Write the name of the first one, then the second, but follow the rules below.
Change endings of Representative Ions to "ide"
Determine the charge of Transition Ions and use roman numerals to identify it. Example below.
Explanation for naming Transition Metals. Iron (Fe) is a transition element. Therefore we do not know its charge. Phosphorus is a Representative Ion. Therefore, because of its group we know it has a -3 charge. There are 2 Phosphoruses,so if we multiply the charge (3) times how many there are (2) that gives us a total charge of 6 on the right side. (the sign doesnt really matter.) The right side charge and the left side charge balance out so we start with a total charge of 6 on the left. Divide that by the number of Irons (3). That gives us a charge for each iron of 2. Thus we know that the name of the Iron is Iron (II).
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Iron (Fe) is a transition element. Therefore we do not know its charge. Phosphorus is a Representative Ion. Therefore, because of its group we know it has a -3 charge. There are 2 Phosphoruses,so if we multiply the charge (3) times how many there are (2) that gives us a total charge of 6 on the right side. (the sign doesnt really matter.) The right side charge and the left side charge balance out so we start with a total charge of 6 on the left. Divide that by the number of Irons (3). That gives us a charge for each iron of 2. Thus we know that the name of the Iron is Iron (II).